• Digital Contents
• /
• no.1 s.92
• /
• pp.22-31
• /
• 2001

산업자원부와 법무부가 함께 추진해온 '골드카드제도'가 시행됨에 따라 기업이 e-비지니스화를 추진함에 있어 가장 큰 애로사항중의 하나인 전문인력의 절대적인 부족현상이 크게 완화될 전망이다. 골드카드제도는 전자상거래 분야에서 5us이상 종사한 경력이 있거나 관련학과 학사 이상 학력 소지자로서 해당 분야에 2년 이상 종사한 경력이 있는 자중에서 산업자원부 장관이 추천하는 자로서 출입국 관리법상의 다양한 혜택을 부여함으로써 인력 유치를 보다 쉽게하기 위한 정책이다. 이 제도는 국내 1회 체류상한기간을 기존의 2년에서 3년으로 연장해주며 복수사증 발급 및 발급절차를 간소화하는 등의 혜택이 주어진다.

• Journal of Korea Water Resources Association
• /
• v.33 no.3
• /
• pp.375-382
• /
• 2000

The surface hydrology of large watershed is susceptible to several preferred stable states with transitions between stable states induced by stochastic fluctuations. This comes about due to the close coupling of land surface and atmospheric interaction. An interesting and important issue is the duration of residence in each mode. In this study, mean transition tunes between the stable modes are analyzed for the Han River Basin. On the basis of historical data, the nonlinear water balance model is calibrated for the Han River Basin. The transition times between the stable modes in the model are studied based on the stochastic representation of the physical processes and on the calibrated model parameters. This study has implications for prediction of the transition time between stable modes or residence times, that is, the time the system spends in a given stable modes, since this would be equivalent to predicting the duration of drought or wet conditions.

• Journal of environmental and Sanitary engineering
• /
• v.14 no.1
• /
• pp.103-115
• /
• 1999

생물학적 처리공정내 미생물은 물리화학적, 생태학적으로 처리공정의 운전조건과 유입하·폐수 특성에 따라 존재량 및 반응조내 존재하는 우점종이 달라진다. 특히,폐수의 생물학적 처리시 유입수내 존재하는 독성 및 저해물질은 생물반응조내 존재하는 미생물의 양을 감소시키거나 미생물의 종류를 단순화시키거나 환경조건 및 폐수 특성변화에 능동적으로 대처할 수 있는 능력을 감소시킨다. 따라서 이러한 문제점을 극복하기 위한 방안으로 생물능력향상(bio-augmentation)이 필요하며, 여러 가지 방법으로 생물능력향상을 이룰 수 있다. 본 연구에서는 생물능력향상을 위하여 기존의 효소활성이 강한 미생물군을 투입함으로써 처리효율향상에 미치는 영향 및 제한성을 고찰하였다. 처리효율 향상을 위해서는 생존성, 폐수에 대한 순응기간 및 미생물의 체류가 매우 중요하였으며, 특히 누입된 미생물군이 처리효율을 향상시키기 위해서는 일정기간 이상의 순응기간이 필요하였다. 한편, 토착미생물군인 UB-1의 경우 기존 생물능력향상 미생물군과 거의 동일한 처리효율을 나타내고 있으며, 사전에 순양기간을 거친 UB-2의 경우도 기존 생물능력향상 미생물군과 비슷한 처리효율을 보였다. 따라서 본 결과로 볼 때 생물능력향상 미생물군 투입에 의한 처리효율의 향상은 크지 않으며, 하·폐수의 생물학적 처리공정에 적요하는데는 다소 제한성이 있은 것으로 판단되었다.

• The Journal of the Korea Contents Association
• /
• v.21 no.12
• /
• pp.585-594
• /
• 2021

As for international migration, family reunification is a key factor for the well-being and social integration of migrants. The UN ensures the right to family unity for the beneficiaries of complementary forms of protection. That includes those who are not recognized as refugees, but are nevertheless at risk of serious harm upon return to their country of origin, and thus are in need of international protection to the same degree as refugees. Although the Korean government provides humanitarian stay permits as complementary forms of protection, it does not guarantee family reunification as it does for refugees. This study aimed to examine the family reunification systems in Sweden, Ireland, Australia and Canada and to propose policy implications for family reunification of humanitarian status holders in Korea. The results showed that these countries commonly ensures the rights to family reunification although permission periods and scope vary by country. This study concludes that the Korean government should develop a legal system to ensure family reunification for humanitarian status holders since it is guaranteed as a basic human right by international covenants and promotes positive integration to countries of stay.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.12 no.1
• /
• pp.84-93
• /
• 2004

This study was performed : 1) to find the suitable HRT(hydralic retention time), 2) to evaluate the effects of the ratio of mixing/aeration time and injection time of external carbon source, for the removal of organics, nitrogen and phosphorus in swine wastewater by SBR(sequencing batch reactor process), which is one of the biological treatment process. The result of this study were summarized as follows : (1) As the ratio of mixing/aeration time was higher, $NH_4{^+}-N$ removal efficiency was increased and it was increased with increasing injection time of external carbon source because nitrification was affected by denitrification microbes propagation when injection time of external carbon soruce was shorted. T-N removal efficiency was increased with increasing the ratio of mixing/aeration time and injection time of external carbon source. (2) The T-P removal efficiency showed a great difference in each operating condition, and it was increased with increasing the ratio of mixing/aeration time increased and when the injection time of external carbon source was shorted because denitrification was done with effect by denitrification microbes propagation. (3) The highest removal efficiency of organic and nitrogen were obtained by the operating condition of Run 4-1(the ratio of mixing/aeration time : 16.5/5.5, injection time of external carbon source : 15hours) and T-P were obtained by the operation condition of Run 4-2(the ratio of mixing/aeration time : 16.5/5.5, injection time of external carbon source : 3hours), and efficiency(effluent concentration)of $BOD_5$, $COD_{Mn}$, $COD_{Cr}$, T-N and T-P in the treated water was 96.1%, 87.7%, 90.6%, 86.6% and 84.5%, respectively.

• Korean Journal of Ecology and Environment
• /
• v.37 no.3 s.108
• /
• pp.263-271
• /
• 2004

To collect the basic ecological information about the microbial food webs in eutrophic water system with different residence time, the monthly variation of bacterioplankon (bacteria and small-sized cyanobacteria) and nanoplankton (phytoplankton and protists) were examined from December 2000 to September 2001. Kyungan stream is shorter in resident time (ca.5.4 d) than Seokchon reservoir (ca.72 d), even though they showed the same pattern in precipitation. With the basic environments, we examined the biomass (standing crops and its carbon content) of each plankton collected from the surface water. Large-sized planktons flourished in the time of low temperature, while small planktons were in the time of the high temperature period. Especially, in the Kyungan stream with much disturbance by rainfall and outflow, high diversity showed in term of species and cell morphology, compared to that of Seokchon lake. The time-lag relationship remarkably showed between phytoplankton and bacteria in Seokchon reservoir, and between protists and bacteria in Kyungan stream, respectively.

• Korean Journal of Labor Studies
• /
• v.24 no.3
• /
• pp.73-107
• /
• 2018

The purpose of this study is to shed light on the characteristics of the social relations of migrant workers in the Ansan area and the factors for the construction of those characteristics. The social relations of migrant workers in the Ansan area are affected by the Korean government's policy of EPS, a short-term rotation policy and its ban on the settlement of migrant workers. These workers are likely to form a temporary and bounded social relationship. The bounded social relationship of migrant workers to society is one of the major factors that put them in social poverty. Ethnic communities, support organizations for migrant workers, and local government agencies have assumed the task of helping build the network among migrant workers of various ethnic backgrounds as well as aiding their participation in local social activities. The status of a temporary resident is the prime reason for spatial exclusion and social poverty among migrant workers. To prevent the exacerbation of these phenomena, this study suggests that the government reconsider its short-term work permit policy for less skilled workers.

• Korean journal of communication and information
• /
• v.22
• /
• pp.211-247
• /
• 2003

This study explored how Korean immigrants education, length of stay and English fluency affect their political socialization, mediated through traditional news media and the news Web use. Political socialization included political knowledge, interest, and participation. The media usage patterns included U.S. news media, U.S. news Web, Korean news Web, and Korean news Media use by Korean immigrants in the United State. This study found as follows. First, education, length of stay, and English fluency indirectly increased political socialization(political knowledge, interest, and participation) through their relationship with U.S. news media use. Second, U.S. news Web played a potentially important role in Korean immigrants' political socialization by increasing their political interest. Third, Korean news media partly contributed to Korean immigrants' political socialization by increasing their political interest. Fourth, Korean news Web use did not contribute to Korean immigrants' political socialization in terms of political knowledge, interest, and participation at all. In conclusion, this study found that traditional news media's role was more important than news Web's one in the process of immigrants' political socialization to the host society.

• The Journal of the Korea Contents Association
• /
• v.9 no.9
• /
• pp.268-277
• /
• 2009

This study seeks to promote the mental and physical efficiencies of the foreign workers working in our country through the promotion of their health, and provide help in their effective use of medical treatments and granting appropriate medical benefits, and provide the basic information helpful in managing the health of the foreign workers who are playing a role in the advancement of the industry in Korea for the companies and employers that are employing them by researching the health condition and management status centering on the foreign workers from a part of Asia and South America who are working in our country. I made a regression analysis toward 231 foreign workers who have employed in industrial workplace from Mar. 1 to Jun. 30, 2008. The result said the factors that affect significant impact on common health disorder of foreign workers in their daily circumstances were staying period in Korea($\beta$=.270),difficulty to access hospital($\beta$=.268), inferior sanitation of work place($\beta$=.218), smoking or not($\beta$=.170), actual condition of health maintenance($\beta$=-.251).($R^2$=0.501)

• Journal of dental hygiene science
• /
• v.15 no.1
• /
• pp.1-11
• /
• 2015

This study analyzed the tooth brushing behavior and oral health status of foreigner immigrant workers and obtained the following results. Statistical significance based on different general characteristics. Gender, educational background, period of stay, health insurance, medical expense coverage, and whether or not one has friends or regular gatherings were significant traits for frequency, while age, marital status, income, and health insurance were traits for part (p<0.05). Statistical significance (p<0.05) was found in marital status and health insurance for time used to brush teeth, period of stay and whether or not one attends a regular gathering for tooth brushing training, and gender, educational background, period of stay, roommate status, medical expense coverage, and whether or not one attends a regular gathering for supplemental oral product usage. The averages of decayed, missing, and filled teeth (DMFT) index and community periodontal index of treatment needs (CPITN) for general characteristics were 6.98 and 3.03 respectively, and gender, roommate status, income, health insurance for DMFT index, and gender, age, marital status, educational background, roommate status, income, health insurance for CPITN were statistically significant (p<0.05). Tooth brushing frequency and part showed statistical significance (p<0.05) for DMFT index based on tooth brushing behavior, while tooth brushing part and time used to brush teeth were significant for CPITN. DMFT index was high at 8.34 for '3 times or more' in tooth brushing frequency, while DMFT index was high at 7.91 and CPITN was low at 2.94 for tooth brushing part. '3 minutes or longer' in time used to brush teeth was the lowest in CPITN at 2.88. As a result of analyzing the correlation between tooth brushing behavior and DMFT index, CPITN, tooth brushing frequency and part in DMFT index, and tooth brushing part and time used to brush teeth in CPITN showed significance (p<0.05). Based on the above results, we must promote the significance of brushing teeth and implement continuous training for correct tooth brushing management to enhance the oral health of foreign immigrant workers.